package com.example.druid.config;



import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;

import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.util.HashMap;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        return new DruidDataSource();
    }

   //后台监控: web.xml, servletRegistrationBean
    //因为SpringBoot内置了servlet容器, 所以没有web.xml, 替代方法ServletRegistrationBean
    @Bean
    public ServletRegistrationBean statViewServlet(){

       ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>( new StatViewServlet(), "/druid/*");

        //后台需要有人登录, 账号密码配置
        HashMap<String,String> initParameters = new HashMap<>();

        //增加配置
        initParameters.put("loginUsername", "admin");  //登录key 是固定的 loginUsername LoginPassword
        initParameters.put("loginPassword", "123456");

        //允许谁可以访问
        initParameters.put("allow", "");

        //禁止谁访问  initParameters.put("xxx", "xxx.xxx.xx.xxx");

        bean.setInitParameters(initParameters);  //设置初始化参数

        return bean;
    }

    //filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());
        //可以过滤哪些请求呢？
        HashMap<String,String> initParameters = new HashMap<>();
        //这些东西不进行统计
        initParameters.put("exclusions", "*.css,*.js,/druid/*");
        bean.setInitParameters(initParameters);
        return bean;
    }


}

